src/modules/investments/portfolio/application/forecast.service.ts

@@ -20,6 +20,7 @@ export class ForecastService {
     lastAttempt?: InvestmentResourceMetaDto['lastAttempt'];
     membershipRevision: number;
     portfolio: InvestmentResourceMetaDto;
+    replacesLatest?: boolean;
     revision: string;
     scopeKey: string;
     sources: {
@@ -74,7 +75,7 @@ export class ForecastService {
           .map((dependency) => dependency.sync)
           .find((sync) => sync.state === 'failed');
     return {
-      data: stored ? filterEvents(stored.payload as T, input.scopeKey) : null,
+      data: stored ? filterEvents(stored.payload as T, input.scopeKey, stored.scopeKey) : null,
       meta: investmentResourceMeta({
         resourceKey: input.scopeKey,
         dataRevision: String(stored?.dataRevision ?? MISSING_DATA_REVISION),
@@ -95,7 +96,7 @@ export class ForecastService {
   }
 }
 
-function filterEvents<T extends object>(payload: T, scopeKey: string): T {
+function filterEvents<T extends object>(payload: T, scopeKey: string, savedScopeKey: string): T {
   if (!scopeKey.startsWith('events/')) return payload;
   try {
     const [, from, to] = JSON.parse(scopeKey.slice('events/'.length)) as [string, string, string];
@@ -111,8 +112,10 @@ function filterEvents<T extends object>(payload: T, scopeKey: string): T {
       const current = totals.get(event.projectedAmount.currency) ?? { value: 0n, scale: 0 };
       totals.set(event.projectedAmount.currency, add(current, decimalFromString(event.projectedAmount.value)));
     }
+    const [, savedFrom, savedTo] = JSON.parse(savedScopeKey.slice('events/'.length)) as [string, string, string];
     return {
       ...value,
+      window: { from: savedFrom, to: savedTo },
       events,
       incomeTotalsByCurrency: [...totals]
         .sort(([left], [right]) => left.localeCompare(right))

src/modules/investments/portfolio/infrastructure/forecast.repository.ts

@@ -26,6 +26,7 @@ export class ForecastRepository {
     membershipRevision: number;
     portfolioProjection: string;
     portfolios: { accountId: string; dataRevision: number }[];
+    replacesLatest?: boolean;
     revision: string;
     scopeKey: string;
     sources: ForecastSourceVersion[];
@@ -51,32 +52,30 @@ export class ForecastRepository {
       const previous = await tx.tbankForecast.findUnique({
         where: { userId_revision_scopeKey: key },
       });
+      // An events read serves the account's latest complete forecast whatever
+      // the requested window; other scopes keep their exact-key row.
       const requestedWindow = eventsWindow(input.scopeKey);
-      const saved = previous ?? (requestedWindow
-        ? (
-            await tx.tbankForecast.findMany({
-              where: {
-                ...owner,
-                scopeKey: { startsWith: 'events/' },
-                membershipRevision: input.membershipRevision,
+      const latest = requestedWindow
+        ? await tx.tbankForecast.findFirst({
+            where: {
+              ...owner,
+              // scopeKey is `events/[accountId,from,to]` JSON: pin the account.
+              scopeKey: {
+                startsWith: `events/[${JSON.stringify(requestedWindow.accountId)},`,
               },
-            })
-          ).find((forecast) => {
-            const window = eventsWindow(forecast.scopeKey);
-            return (
-              window &&
-              window.accountId === requestedWindow.accountId &&
-              window.from <= requestedWindow.to &&
-              requestedWindow.from <= window.to
-            );
+              membershipRevision: input.membershipRevision,
+            },
+            orderBy: [{ calculatedAt: 'desc' }, { scopeKey: 'asc' }],
           })
-        : null);
+        : previous;
       const fallback =
-        saved?.membershipRevision === input.membershipRevision
-          ? saved
-          : null;
+        latest?.membershipRevision === input.membershipRevision ? latest : null;
       if (!input.candidate) return fallback;
-      if (!previous && fallback) return fallback;
+      // Only the default window may replace the latest forecast; an explicit
+      // range is served from it and publishes only when nothing is saved.
+      if (!input.replacesLatest && fallback && fallback.scopeKey !== input.scopeKey) {
+        return fallback;
+      }
       const portfolios = await tx.tbankPortfolio.findMany({
         where: {
           ...owner,
@@ -152,7 +151,7 @@ export class ForecastRepository {
       ) as Prisma.InputJsonObject;
       const timestamps = input.timestamps as Prisma.InputJsonArray;
       if (
-        fallback &&
+        fallback?.scopeKey === input.scopeKey &&
         isDeepStrictEqual(fallback.dependencyRevisions, revisions) &&
         isDeepStrictEqual(fallback.sourceTimestamps, timestamps)
       ) {

src/modules/investments/upcoming-events/upcoming-events.dto.ts

@@ -65,6 +65,14 @@ export class UpcomingEventDto {
   declare projectedAmount: MoneyDto | null;
 }
 
+export class UpcomingEventsWindowDto {
+  @ApiProperty({ format: 'date' })
+  declare from: string;
+
+  @ApiProperty({ format: 'date' })
+  declare to: string;
+}
+
 export class UpcomingEventsDto {
   @ApiProperty()
   declare accountId: string;
@@ -72,6 +80,13 @@ export class UpcomingEventsDto {
   @ApiProperty({ format: 'date-time' })
   declare calculatedAt: string;
 
+  @ApiProperty({
+    type: UpcomingEventsWindowDto,
+    description:
+      'Inclusive UTC window the saved forecast was calculated for. Unchanged by the requested from/to filter.',
+  })
+  declare window: UpcomingEventsWindowDto;
+
   @ApiProperty({ type: UpcomingEventDto, isArray: true })
   declare events: UpcomingEventDto[];
 

src/modules/investments/upcoming-events/upcoming-events.service.ts

@@ -150,7 +150,7 @@ export class UpcomingEventsService {
         a.type.localeCompare(b.type) ||
         a.ticker.localeCompare(b.ticker),
     );
-    const candidate: undefined | UpcomingEventsDto = ready
+    const candidate: Omit<UpcomingEventsDto, 'window'> | undefined = ready
       ? {
           accountId,
           calculatedAt: new Date().toISOString(),
@@ -163,6 +163,7 @@ export class UpcomingEventsService {
       revision: connection.revision,
       membershipRevision: connection.membershipRevision,
       scopeKey: `events/${JSON.stringify([accountId, window.from, window.to])}`,
+      replacesLatest: query.from === undefined && query.to === undefined,
       portfolio: portfolio.meta,
       lastAttempt: hourlyAttempt(
         hourly,

test/upcoming-events.e2e-spec.ts

@@ -82,7 +82,10 @@ describe('saved payout calendars and complete forecasts (SQLite HTTP)', () => {
       `brokerage-accounts/${scope}/events?from=${range.from}&to=${range.to}${observe ? '&sync=observe' : ''}`,
       userId,
     );
-  const refresh = async (range = window, accountId = 'account') => {
+  const refresh = async (
+    range: { from?: string; to?: string } = window,
+    accountId = 'account',
+  ) => {
     await app.get(UpcomingEventsService).refresh('owner', accountId, range);
     await settled();
   };
@@ -318,17 +321,23 @@ describe('saved payout calendars and complete forecasts (SQLite HTTP)', () => {
     expect(upstream.getDividends).toHaveBeenCalledTimes(count);
   });
 
-  it('never relabels another range or membership snapshot and rejects inaccessible accounts locally', async () => {
+  it('serves a disjoint range as an empty saved result and never relabels a membership snapshot', async () => {
     await refresh();
     await settled();
-    await events().expect(200);
+    const saved = (await events().expect(200))
+      .body as UpcomingEventsResourceDto;
     const newRange = (
       await events(true, 'account', 'owner', {
         from: '2099-03-01',
         to: '2099-03-31',
       }).expect(200)
     ).body as UpcomingEventsResourceDto;
-    expect(newRange.data).toBeNull();
+    expect(newRange.data).toEqual({
+      ...saved.data,
+      events: [],
+      incomeTotalsByCurrency: [],
+    });
+    expect(newRange.data?.window).toEqual(window);
     await prisma.tbankConnection.update({
       where: { userId: 'owner' },
       data: { membershipRevision: { increment: 1 } },
@@ -640,6 +649,132 @@ describe('saved payout calendars and complete forecasts (SQLite HTTP)', () => {
     expect(moex.bondEvents).not.toHaveBeenCalled();
   });
 
+  it('keeps the latest wide forecast when an explicit narrower range has a complete candidate', async () => {
+    await refresh();
+    const full = (await events().expect(200))
+      .body as UpcomingEventsResourceDto;
+    const narrowRange = { from: '2099-02-01', to: '2099-02-10' };
+    await refresh(narrowRange);
+
+    const narrow = (await events(true, 'account', 'owner', narrowRange).expect(
+      200,
+    )).body as UpcomingEventsResourceDto;
+
+    expect(narrow.data?.calculatedAt).toBe(full.data?.calculatedAt);
+    expect(narrow.data?.window).toEqual(window);
+    expect(narrow.data?.events.map((event) => event.date)).toEqual([
+      '2099-02-01',
+    ]);
+    expect(await prisma.tbankForecast.count()).toBe(1);
+  });
+
+  describe('daily default window shift', () => {
+    const day0 = '2099-02-01';
+    const day1 = '2099-02-02';
+    const windowOf = (from: string, to: string) => ({ from, to });
+    const w0 = windowOf(day0, '2099-03-03');
+    const w1 = windowOf(day1, '2099-03-04');
+    const dividend = (date: string) => ({
+      recordDate: time(date),
+      dividendNet: { units: '10', nano: 1, currency: 'usd' },
+    });
+    const defaultEvents = async () =>
+      (await get('brokerage-accounts/account/events?sync=observe').expect(200))
+        .body as UpcomingEventsResourceDto;
+    // Only Date is faked: the app and SQLite helpers need real timers.
+    const clock = (date: string) => {
+      jest.useFakeTimers({
+        doNotFake: [
+          'hrtime', 'nextTick', 'performance', 'queueMicrotask',
+          'requestAnimationFrame', 'cancelAnimationFrame',
+          'requestIdleCallback', 'cancelIdleCallback', 'setImmediate',
+          'clearImmediate', 'setInterval', 'clearInterval', 'setTimeout',
+          'clearTimeout',
+        ],
+        now: new Date(`${date}T12:00:00Z`),
+      });
+    };
+    afterEach(() => jest.useRealTimers());
+
+    it('publishes the new window as latest and serves it for stale or disjoint explicit ranges', async () => {
+      clock(day0);
+      upstream.getDividends.mockResolvedValue([
+        dividend('2099-02-05'),
+        dividend('2099-03-04'),
+      ]);
+      await portfolio([position(shareUid, '2')]);
+      await refresh({});
+      const first = await defaultEvents();
+      expect(first.data?.window).toEqual(w0);
+      expect(first.data?.incomeTotalsByCurrency).toEqual([
+        { currency: 'USD', value: '20.000000002' },
+      ]);
+
+      jest.setSystemTime(new Date(`${day1}T12:00:00Z`));
+      await portfolio([position(shareUid, '5')]);
+      await refresh({});
+      const second = await defaultEvents();
+
+      expect(second.data?.window).toEqual(w1);
+      expect(second.data?.calculatedAt).not.toBe(first.data?.calculatedAt);
+      expect(second.data?.events.map((event) => event.date)).toEqual([
+        '2099-02-05',
+        '2099-03-04',
+      ]);
+      expect(second.data?.incomeTotalsByCurrency).toEqual([
+        { currency: 'USD', value: '100.00000001' },
+      ]);
+      const stale = (await events(true, 'account', 'owner', w0).expect(200))
+        .body as UpcomingEventsResourceDto;
+      expect(stale.data?.calculatedAt).toBe(second.data?.calculatedAt);
+      expect(stale.data?.window).toEqual(w1);
+      const disjoint = (
+        await events(true, 'account', 'owner', {
+          from: '2100-01-01',
+          to: '2100-01-31',
+        }).expect(200)
+      ).body as UpcomingEventsResourceDto;
+      expect(disjoint.data).toEqual({
+        ...second.data,
+        events: [],
+        incomeTotalsByCurrency: [],
+      });
+      expect(await prisma.tbankForecast.count()).toBe(2);
+    });
+
+    it('keeps the previous complete forecast when a holding calendar fails after the shift', async () => {
+      clock(day0);
+      upstream.getDividends.mockResolvedValue([dividend('2099-02-05')]);
+      await refresh({});
+      const before = await defaultEvents();
+      expect(before.data?.window).toEqual(w0);
+
+      jest.setSystemTime(new Date(`${day1}T12:00:00Z`));
+      await portfolio([position(shareUid, '7'), position(newUid, '5')]);
+      upstream.getDividends.mockImplementation((_token: string, uid: string) =>
+        uid === newUid
+          ? Promise.reject(new Error('new calendar unavailable'))
+          : Promise.resolve([dividend('2099-02-05')]),
+      );
+      await refresh({});
+
+      expect((await defaultEvents()).data).toEqual(before.data);
+      expect(await prisma.tbankForecast.count()).toBe(1);
+    });
+
+    it('publishes the shifted window even when no source depends on it', async () => {
+      clock(day0);
+      await portfolio([]);
+      await refresh({});
+      expect((await defaultEvents()).data?.window).toEqual(w0);
+
+      jest.setSystemTime(new Date(`${day1}T12:00:00Z`));
+      await refresh({});
+
+      expect((await defaultEvents()).data?.window).toEqual(w1);
+    });
+  });
+
   it('discards a late calendar from a replaced connection and prevents access to old private forecasts', async () => {
     let release: (value: unknown[]) => void = () => {};
     upstream.getDividends.mockReturnValueOnce(